下列缺陷属于集中性缺陷的是(    )。

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69526' and id < 4504630 and id<>'4504630' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69526' and id > 4504630 and id<>'4504630' order by id asc limit 5